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Hydrogen Sulfide Removal

Hydrogen sulfide removal technologies can be classified by lbs of H2S to be removed per day. As a general rule, H2S removal <1,000 lbs per day should consider the use of a fixed bed type scavenger/adsorbent media. A requirement that exceeds this amount should consider alternative processes.

Chemical Products' SULFURTRAP® categorized as a low temperature fixed bed hydrogen sulfide removal media. Hydrogen sulfide removal media or "scavengers" can be futher classified as either (1) fixed (solid) bed scavenger or (2) liquid scavenger. Both types are treatment options for low temperature H2S reduction from sour hydrocarbons. Liquid scavengers have been used for many years for low-pressure, low-sulfur gas wells. Today, liquid scavenger is being replaced by fixed bed scavengersdue to the many advantages fixed-bed type media present over their liquid scavenger counterparts.

Liquid scavenger is typically supplied in drums or totes, and work by pumping the scavenger liquid directly into the sour gas pipeline. When the liquid scavenger runs out, the empty drum must be replaced with fresh chemical. One of the disadvantages of the chemical is the high treating cost. Operating costs can run as much as 10 times or more than fixed bed scavengers. The reason the cost difference is so great is that H2S concentrations and gas flow rates fluctuate, but the liquid scavenger pump is normally pre-set to treat the maximum expected H2S concentration. When H2S levels drop, or flow rate decreases, the pump continues pumping the same amount of liquid. This overuse of chemical leads to much higher chemical cost. Liquid scavenger is hazardous and difficult to safely dispose. Another drawback to the use of liquid scavenger being used for H2S removal is that it has been proven to form solids that deposit in pipelines, valves and tanks leading to additional costs and headaches for downstream processors.

Conversely, SULFURTRAP®, a fixed bed hydrogen sulfide removal system, offers lower treating costs and doesn't form by-products or side reactions. A truely clean and simple process for selective H2S removal. Fixed bed hydrogen sulfide removal products work by passing the sour gas stream through a fixed bed of solid media in a vertical vessel. Fixed bed systems such as SULFURTRAP® can handle fluctuations in flow rate and H2S concentration with no change in performance or the need to “add” chemical, thus lowering operating costs when compared to liquid scavenger.

SULFURTRAP® represents the next generation in fixed bed hydrogen sulfide removal technology. It easily removes H2S to <1 ppm, is capable of high sulfur loading capacity and is free-flowing in both its spent/reacted form. Finally, a product that performs as expected, and is both safe and easy to use.

SULFURTRAP® is currently being used to treat landfill gas, natural gas, natural gasoline and many other mixtures thereof.

Call us today for technical quotation, or for comparitive information concerning the replacement of your current H2S scavenger system.